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76 lines
2.8 KiB
C++
76 lines
2.8 KiB
C++
#pragma once
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#include <unknwn.h> // To enable support for non-WinRT interfaces, unknwn.h must be included before any C++/WinRT headers.
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#include <winrt/Windows.System.h>
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#include <winrt/Windows.Foundation.h>
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#include <winrt/Windows.Foundation.Collections.h>
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#include <winrt/Windows.UI.Xaml.Hosting.h>
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#include <winrt/Windows.UI.Xaml.Markup.h>
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#include <windows.ui.xaml.hosting.desktopwindowxamlsource.h>
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#include <windowsx.h>
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// This class is used for handling XAML Island operations
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class XamlBridge
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{
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public:
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// Function to run the message loop for the xaml island window
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int MessageLoop();
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// Constructor
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XamlBridge(HWND parent) :
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parentWindow(parent), lastFocusRequestId(winrt::guid()), winxamlmanager(nullptr)
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{
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}
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// Function to initialise the xaml source object
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HWND InitDesktopWindowsXamlSource(winrt::Windows::UI::Xaml::Hosting::DesktopWindowXamlSource);
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// Function to close and delete all the xaml source objects
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void ClearXamlIslands();
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// Message Handler function for Xaml Island windows
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LRESULT MessageHandler(UINT const message, WPARAM const wParam, LPARAM const lParam) noexcept;
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private:
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// Stores the last window handle in focus
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HWND m_hwndLastFocus = nullptr;
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// Stores the handle of the parent native window
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HWND parentWindow = nullptr;
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// Window xaml manager for UI thread.
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WindowsXamlManager winxamlmanager;
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// Stores the GUID of the last focus request
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winrt::guid lastFocusRequestId;
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// Function to return the xaml island currently in focus
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winrt::Windows::UI::Xaml::Hosting::DesktopWindowXamlSource GetFocusedIsland();
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// Function to pre process the message on the xaml source object
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bool FilterMessage(const MSG* msg);
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// Event triggered when focus is requested
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void OnTakeFocusRequested(winrt::Windows::UI::Xaml::Hosting::DesktopWindowXamlSource const& sender, winrt::Windows::UI::Xaml::Hosting::DesktopWindowXamlSourceTakeFocusRequestedEventArgs const& args);
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// Function to return the next xaml island in focus
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winrt::Windows::UI::Xaml::Hosting::DesktopWindowXamlSource GetNextFocusedIsland(MSG* msg);
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// Function to handle focus navigation
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bool NavigateFocus(MSG* msg);
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// Stores the focus event objects
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std::vector<winrt::Windows::UI::Xaml::Hosting::DesktopWindowXamlSource::TakeFocusRequested_revoker> m_takeFocusEventRevokers;
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// Stores the xaml source objects
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std::vector<winrt::Windows::UI::Xaml::Hosting::DesktopWindowXamlSource> m_xamlSources;
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// Function invoked when the window is destroyed
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void OnDestroy(HWND);
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// Function invoked when the window is activated
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void OnActivate(HWND, UINT state, HWND hwndActDeact, BOOL fMinimized);
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// Function invoked when the window is set to focus
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void OnSetFocus(HWND, HWND hwndOldFocus);
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};
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